Survival Kit, software

This resource is to describe the usage of Survival Kit[1][2][3] software package used for survival analysis (the paper). The focus will be on step by step description how to run the basic examples with fixed effects. The real advantage of the Survival Kit is its ability to handle very large databases (up to several million records) including random effects. This is however outside of scope of this beginner guide, while novice users should get familiar with the basic principles first.
The description deals with Survival Kit v6.06 available online at boku.ac.at.

Release notes

15. March 2010 - Wikiversity page has been created to assist Survival Kit v3.12 users.

02. November 2010 - Description on the page updated for SK v6.06, the program was uploaded to its non-official storage space.

08. November 2010 - The executable files updated on the [Mediafire storage space], but the link remained the same. Upload to the official BOKU site still pending.

The Survival Kit is intended for survival analysis using proportional hazards model with a single response time. These models describe the hazard function of each individual (i.e. its limiting probability of dying at time t, given it is still alive just prior to t) as the product of a baseline hazard function and a positive (exponential) function of explanatory covariates. The baseline hazard function can be parametric (Weibull model) or left unspecified (Cox model[4]).
When the failure time variable is discrete (i.e. has very few values) and many observations with the same failure times, many ties occur between failure times. In such case, the Cox model is not valid any more, but the "grouped data" approach[5] should be used.